Spool.



PATENTED FEB. 5, 1907" P. HARDMAN.

SPOOL.

APPLICATION FILED MAY 1? 1906.

m M flwm TEll jlt HAHUMAN, ()lfi WILLUIANTIG, CONNECTICUT.

SPOOL.

Specification of Letters Patent.

Patented Feb. 5, 1907.

Application filed May 17,1906. Serial No. 317,294,

' To of/ ir/mw if may roan/rm;

5 against being forced n llo it known that l, li-rrulc llmmin, ut'lilZtll (.l tlze l'nitetl Stun-s, rt-sulmg :it ll lllinmuiir. ('Hltlllol' Wmuliiun, Shite ol ('onnu'tirut, (Desi-oillfl u torus llH sunny)have 1 invoutvil ('t'f'lzllll now uu'l usolul lniprovellltlllfi inSllllJlfw, ol' 'llll'll the l'ollouing is it lull, ('ltlll', un-i oxuct(fesrription.

My im'rntion rolntos to improvemon'rs in spuolslurlllltuzll1ll'llll(lil\(lilll( is to provide it simple. inoxpensive, and liglihweight article of tliut type. the sumo wlion oompleted possossing groutstrength and durability, llze liezul portion tlzereoi bring s)constructel as to eil'mtively rrsist strains unil so as to rolieveHlltlt'li mid wcnr ol' lilI(:t lguii'vs ronunonly employed in\viiuling-nlu.- chines for loyin tlie tbreml upon the spool. 'llloexposed portions oi llll lwius ore priiotioully wot vrprooi.

ln tluaccompanying drawings, Figuro l is at side rlov'iition of thelinislieg article with ono bend in section. Fig. .2 is-lm end elevationoi {l rlllllSllU-ll article. Fig. 3 is 21, frugn'u-utury srutionol viewof one end of a spool with the bend applied tltorcto and prior to lliofinishing operation. I

A is tho boov or cylindrical portion of the spool. 'lliin is formed,preferably, of a strip of paper wound on itself to form nseriw oflmninui ionwliieli nuiybo cemented togotlior (by glue. for instance} unl whit-l1vollrotivoly oonstituto a tubo of Fuflicicnt tliii-kness togive. the neoossury Strength.

B B are the heads. Tlieso hoods are formed of ulp (preferably wood-pulpl[Hill are first. mo (led to the cross-section size and nutlino shown inFi 3. The inner bore ol'oovh hood is outwnro y illlIPll. the inner endbeing adapted to snugly lit the tubular body A. Tho and of the tubularluulyiu slit-tad, as at A A.

D I) am plugs tapered in form and or rangod to be inserted into theslittod on si of thobodv A, so that when the bends B B are in positionsaid slitted ends will no oxpnndo'd tlnl pressed into intimate and firmcontact with the inner wall of said spoolheai's. thus] efl'ectivelholding the lotto! mood to more effectively unite the parts. Eat-l1 oftho pluggi D l) is centrally bored, as at 1)", so as to provide 0.bearing for the finindlo whilo tlie Hpoolis being; wound or while it isin non, The plugs l) are preferably made of Wood, since that materialaffords good Glue is preferably bearing and weuring surfaces andpossesses sullieirnt strength and rigidity to etfectively hold the tubeends against coin )I'CSSlOIl.

The beads B B, as before ascribed, are nmdo from pulp. When a Lead isfirst formed, it has tl:e size and Cress-sectional outline SlltHlll inFig. 3. T1 is lead is tlen treated itli it suitable sizing and hardeningvlomont, preferably glue and milk, lirh is olloued to penetrate \i'ellinto tlzo entire outer surl'uee, euro being token, 110 ever, to leave oninner relatively soft core portion B", Fig. 25. 'llie burdened slellportion, bounded by ilot-uml-diisli lines, is indicated by B. Since tiebard slell this formed (particularly on tlze tuporod side) would oflergreat resistonve to tie tlrcnd-guide, the latter might be rapidly wornor injured in use, tlereforo 1 remove in any suitable wayfor example, bygrinding; doun to ti o dotted outlino-port of the hardened sl'ellportion and on tl1e tapered side, cutting it back until tle Fore orrelatively soft portion B is remind. in t]. is nuinner that ortion oftl;e load \Yl irlt supports t1 0 tlrea and uith \Ylil'li tle tlrend-guide comes in contact is relatively soft, although sufficientlyfirm to roperly support the several layers of t} read. 3y tl isimprovement no severe sl1ocks are imported to tlc guide. By rovidingnrela.-

tively burdened slioll portion I gain anotlzer advantage, to it: Ithereby, render the exposed s ool-l'ends more. durable and incapable ofa sorbing moisture to the some degree that the relatively soft pulp ncold absorb moisture. Hence ion tlo spools are used in moist climates tiere is no danger of tlie leads an ailing and softenin lt \iill beunderstood that tile beveled thread-bearing surface of eachflspool-lead(wlioh is relatively soft) is covered uith thread wlen wound, and henceprotected against moisture.

What I claim i9-- 1. 1n n spool, a tubular body rtion, and

a head portion therefor made rom homogeneous material, the innen'walland end wall of said head being hardend, the tapered tli read-boaringwall being relatively soft.

2. A spool comprising a hollow or tubular body, a head for each end ofsaid body por-r tion, said heads being formed of pulp, thetl=road-supporting surfaces ti Proof being relatively softer than tl-eotl er portions tl oraof, and means for securing the heads in place onthe ends of tl.e body portion.

v 3. In a spool, a laminated tubular body formed by winding a strip ofpaper upon itself, a head for each end of said' body, each of said headsbeing formed of pulp, the inner bore of each of said heads flaringoutwardly, a. plug for each end of said bod portion, the external wallof each of said plugs having a flare corresponding to the flare of thebore in each of the heads, and a central spindle passage or bore in eachof said plugs, the thread.- supporting surface of each of said Leadsbeing relatively softer than the otter portions of said head.

4. A spool comprising a tubular body,

I homogeneous heads formed of pulp hardened on the ends and relativelysoft at the threadbearing portions, and means for scouring the heads tothe body.

5. A spool comprising a tubular body, homogeneous leads formed of pulphardened l on the ends and relatively soft at the threadbearingportions, and wood plugs in the body for securing the heads to the body.

PETER HARDMAN Witnesses:

E. S. Boss, v DWIGHT A. LYMAN.

